Unstoppering-machine.



(fl/Ilma S. C. BOND.

UNSTOPPERING MACHINE. APPLIOATION FILED PEB. 15, 1912.

Patented Feb. 3, 1914.

INVENTOR WITNSSES ATTORNEY COLUMBIA PLANUURAPH CIJ.. WASHINGTON. D. C.

UNITED STATES 4l.)d `l'zlll\l'1 OFFICE..l

sAMUEL c. BOND, OE HOLLYOAK, DELAWARE, AssIsNoa To BOND BOTTLE sEALING COMPANY, OE WILMINGTON, DELAWARE, A CORPORATION or DELAWARE.

UNsTOPrERING-MAOHINE.

Specification of Letters Patent.

i Patented Feb. 3,1914.

Application filed February 15, 1912. Serial No. 677,882.

To all whom it may concern Be it known that I, SAMUEL C. BOND, a citizen of the United States, and a resident of Hollyoak, Newcastle county, State of Delaware, have invented certain new and useful Improvements in Unstoppering Machines, of which the following is a specification.

lVIy invention relates to improvements in machines for conveniently and expeditiously withdrawing plugs from the ends 0f molds, and the object of my invention is to furnish a mechanical means for unstoppering the ends of molds preparatory tO removing their contents.

My invention is illustrated in the accompanying drawings in which- Figure 1 is a central vertical sectional elevation of my stopper withdrawing means; Fig. 2, an enlarged central vertical sectional elevat-ion of the upper part of the movable plunger, the casing in which said plunger reciprocates, and therlower end of a mold the plug closing which is perforated and engaged by a pin carried by the plunger; Fig. 3, a front elevation of the latch engaging pin in Fig. 2; Fig. 4, a view similar to Fig. 2 the plug being grooved and engaged by a notch formed in the plunger; Fig. 5, a front elevation of the upper end of plunger showing horizontal notch shown in Fig. 4. Fig. 6, a plan of Fig. 4, the mold being removed.

In certain cylindrical molds it is'desirable to close their ends by a plug which is preferably tapered not only on account of its simplicity but also for the ease and certainty.

with which a perfectly tight joint can be made-it being only necessary to strike the plug a light blow to anchor it securely in place. Ihave found, however, that while it is a very easy matter to secure the plugs to the tube it is often a" difficult matter to withdraw them hence I have devised the machine for the purpose herewith illustrated.

In the lirst place I furnish the outer part of each plug with a hole 4 at right angles to its longitudinal axis which is adapted to receive a pin 5 which is carried horizontally by the upper end of a plunger 6 which reciprocates in a cylinder or casing 7, or I groove the outer end of the plug circumferentially so as to form a stem 12 and a head 13 as shown in Figs. 4 and 5. The pin 5 passes by a latch 8 the lower end .of which is pivotally carried by a pin 9 carried by a plunger 6.V This arrangement is used to support f the outer end of the pin or fork to prevent it from bending when the machine is operated to withdraw the plug.

If the construction of the plug be as shown in Figs. 4 and 5, and this I prefer as being the best mechanically; the top of plunger-.6 is furnished with a horizontally disposed notch 14 for the head 13 and a vertically disposed notch 15 for the stem 12, the plug be` ing removably held by these notches as securely as it would be by the pin 5.

The plug being held by the pin 5, 0r the notches in the plunger 6, the latter is low-` ered in any suitable manner when the latch S, if the pin construction is used, is engaged by a part of the cylinder or casing 7 and is thrown into engagement with the outer end of pin or fork 5 and supports this outer end to prevent bending when it is subjected to the strain of pulling the plug from its seat. As the plunger is lowered the outer part of the latch is engaged by the side of the casing 7 and is thereby held in proper engagement with the pin-the plunger being still further lowered carries down with it the tube 1 the lower end of which presently comes into engagement with a stop, which can be conveniently formed by the top of the casing 7, this stop arrests the movement of the tube but not of the plunger 6 which continues to move down to draw plug 3 from its seatas soon as the plug 3 is started the tube 1 can be removed and when the mechanism operating the plunger returns it to its raised posit-ion the plug can be slid off the pin 5 which operation causes the latch 8 to be moved t0 its opened position leaving the pin or hook in condition to engage another plug.

If the lower end of the plug be grooved, as shown in Figs. 4, 5 and 6, it is held directly by the notched plunger until the latter has completed the cycle of its movement during which the tube 1 has been brought into engagement with the top of casing 7 and the plug withdrawn from it as described in connection with t-he pin arrangement shown in Figs. 1, 2 and 3.

The means shown in the drawings for operating the plunger 6 is a shaft 16 carrying an eccentric or crank 10 which carries a strap 11 which is pivotally connected to the plunger, but it will be understood that any other of the Well known means for reciprocating a plunger may be used. For the purposes of my invention it is desirable that the plunger perform one complete reciprocation and then remain at rest until again tripped. The means for accomplishing this movement are so Well known that they Will not have to be described here.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

In a machine for extracting tapered plugs, in combination, a reciprocating plunger and means for actuating the same, a guide, in which said plunger Works, the upper end of which is adapted to engage the article in Which the plug is seated, a means carried by said plunger adapted to engage said plug, and a latch the lower end of which is pivotally carried by said plunger and the upper end of Which is adapted to engage the outer end of said plug engaging means.

SAMUEL C. BOND.

Witnesses:

ARTHUR H. G. GAMTT, WALTER H. MA'rsoN.

Copies of this patent may be obtained for 've cents each, by addressing the Commissioner of Patents, Washington, D. G. 

